Coal features and depositional environment of the Northern Karapınar–Ayrancı coal deposit (Konya, Central Turkey)

Abstract

Introduction Recent exploration by the Turkish General Directorate of Mineral Research and Exploration (MTA) proved several coal deposits hosted in Neogene sedimentary basins across the country. The most significant one due to its total geological reserves (around 1.8 Gt) is the Karapınar-Ayrancı coal deposit located at the southernmost of Central Turkey; the coal is planned to be exploited and used for feeding the thermal power plant to be installed nearby. During the late Cenozoic, regional tectonic movements caused the development of fault-controlled basins and volcanic activity in

Gospodarka Surowcami Mineralnymi - Mineral Resources Management

“…Similar partings (referred to as chalk, marl, marly limestone, limestone, clayey limestone, etc.) also occur in some European lignite seams (e.g., Kolovos et al 2002;Thomas and Frankland 2004;Akkiraz et al 2012;Villalba-Breva et al 2012;Oskay et al 2019). Thus, the majority of CaO is dispersed within organic matter in the form of CaCO 3 , while the remainder enters into other mineral phases.…”

“…Burning large amounts of lignite (and similar amounts of hard coal) produces large amounts of both fly ash and bottom ash. In general, ash chemistry is of great importance in many aspects of lignite (and hard coal) exploitation, combustion, and ash utilization, including environmental protection (e.g., Filippidis et al 1996;Vassilev et al 1997;Ratajczak et al 1999;Ward 2002;Galos and Uliasz-Bocheńczyk 2005;Carmona and Ward 2008;Markič and Sachsenhofer 2010;Misiak 2015;Karayiğit et al 2019;Oskay et al 2019;Životić et al 2019;and references therein). In Poland, fly ash is analyzed for critical elements content in lignite intended for the production of 'clean energy' (Bielowicz 2016;Wagner et al 2019) and/or its utilization (Galos and Uliasz-Bocheńczyk 2005; Uliasz-Bocheńczyk 2011), while bottom ash obtained in the laboratory is studied for purposes of environmental protection, including human health (Goldsztejn 2007;Bielowicz 2013).…”

Maceral Association in Coal-bearing Formation of Mae Than Coal Mine in Lampang, Thailand - Implication for Depositional Environment

“…All coal facies diagrams indicate that the swamp or mire was under anoxic conditions, which can be attributed to a permanently high water table under limnotelmatic to telmatic conditions (Oskay et al, 2019). Maceral compositions also suggest that peat was deposited in the mire to forest swamp.…”

“…The values of VI vary from 0.60 to 18.33. A high value of VI (>1) indicates that the preservation of plant tissues occurred under comparatively more reducing and acidic conditions (Oskay et al, 2019). The GWI values range from 0.87 to 53, indicating that the accumulation of organic matter developed under a rheotrophic hydrological regime (Oskay et al, 2019).…”

A multidisciplinary study and palaeoenvironmental interpretation of middle Miocene Keles lignite (Harmancık Basin, NW Turkey), with emphasis on syngenetic zeolite formation

“…In contrast, macrophyte and conifer palynomorphs were observed in this sample, and inertodetrinite and funginite are the predominant inertinite macerals. As mentioned earlier, the former maceral is associated with detrohuminite macerals and clays, and in such an association, inertodetrinite had an allochthonous origin (O' Keefe et al, 2013;Oskay et al, 2019b). In addition, funginite could imply that decay of organic matter took place in a humid environment, and the decay seems to develope after the plant death due to the lack of resinite-funginite association (Hower et al 2010;Ogala et al 2012).…”